[ros-users] controllers for car-like robots

[Brian Gerkey]

On Thu, Dec 9, 2010 at 2:53 PM, <DRamachandran at hra.com> wrote:
>  A question about LAGR. In the TR paper referenced in the ROS docs, you say in the intro that the controller accounts for the non-zero turning radius of the robot. However in the control section you mention that it samples trajectories with pure theta-dot as well, but this should not be possible with non-zero turning radius?

Ah, that's because the LAGR robot isn't actually car-like; it has two
driven wheels in the front and two passive casters in the back.  So
you can command pure theta-dot, and it will rotate in place, about the
center of the front axle.

	brian.